concentrate on

动词 concentrate on:

1. center upon
   同义词：focus on, center on, revolve around, revolve about, center

1. It's too hot to concentrate on book.
   热得不能集中心思看书。
2. Having failed my French exams, I decided to concentrate on science subjects.
   我因法语考试不及格而决心专攻理科。
3. I can't concentrate on my work when I'm tired.
   我累了就无法集中精力工作。